Abstract
The objective of this work is to develop a widely tunable source in the infrared for use in high-resolution spectroscopy and trace gas detection. We have begun development of a diode laser-pumped spectroscopic source based on difference- frequency generation (DFG) in Gallium Selenide (GaSe) that is continuously tunable in the 7–18 micron region and will operate at room temperature. Such a DFG source would be a potential alternative to a lead-salt diode laser-based detection system requiring cryogenic temperatures and numerous individual diode lasers.
© 1996 Optical Society of America
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